Earth Sciences Commons^™

County-Based Priority Assessment Methodology For Phasing Of Wellhead Protection Programs, H. O. Pfannkuch, M. E. Campion, D. C. Mccaa, J. M. Palenberg

Journal of the Minnesota Academy of Science

ABSTRACT-Setting priorities to schedule and implement wellhead protection programs for municipal and community drinking water supplies is presented in the framework of a general risk assessment approach. This includes a hazard identification procedure representing the likelihood of contaminants being released to the surface environment, a hydrogeologic vulnerability assessment representing the risk of contaminants entering the groundwater supply, and an impact assessment, strongly linked to the population at risk. A methodology was developed to aggregate information on a county basis for Minnesota. The resulting composite risk index map shows a number of counties in the central part of the state roughly …

Factors Affecting Water-Supply Potential Of The Twin Cities Metropolitan Area Aquifer System, Michael E. Schoenberg

Journal of the Minnesota Academy of Science

ABSTRACT-The Twin Cities aquifer system in Minnesota contains five aquife~s and fou: confining units that together consist of fourteen geologic units. Unconsolidated sand and gravel aqmfers overlie bedrock sandstone and carbonate aquifers. Between 1880 and 1980, groundwater wi_thdrawals have c_aused long-term wate~ level declines of as much as 90 feet in the Prairie du Chien-Jordan aquifer and 240 feet m the deeper Mount S~monHinckley aquifer-the two major sources of groundwater supplies in the ar~a .. The estimated max1mu1:1 continuous withdrawal rate from the aquifer system is about 650 Mgal/d (million gallons per day). This compares with an average daily groundwater …

A Hydrologic Model For Minnesota Peatlands, Kenneth N. Brooks, Dawn R. Kreft

Journal of the Minnesota Academy of Science

ABSTRACT-The Peatland Hydrologic Impact Model (PHIM) is a continuous simulation computer model developed over a twelve-year period to aid hydrologists in understanding the hydrologic functions of peatlands and upland-peatland watersheds. An initial conceptual model defined the research needed to create the working m?del. The re~e_arch has become an iterative process of model design, field work, model refinement, ~ode! test1?g, an~ add1t1?nal field work. The model is as physically-based as possible while relying on data mput that 1s readily available to the natural resources community. It simulates streamflow response of peatlands, upland-peatland systems, mined peatlands, and a combination of these watershed …

The Legislative Commission On Minnesota Resources Involvement In Water Resource Programs, John Velin, George Orning

Journal of the Minnesota Academy of Science

ABSTRACT :--The Legislative Commission on Minnesota Resources (LCMR) has funded over $32 million worth of projects m three water-related areas since 1963. The authors describe the process the Commission uses to allocate money and summarize the general nature and accomplishments of many of the water projects.

Late Pennsylvanian And Early Permian Cyclic Sedimentation, Paleogeography, Paleoecology, And Biostratigraphy In Kansas And Nebraska, Roger K. Pabian, Robert F. Diffendal, Jr. Jr.

Robert F. Diffendal, Jr., Publications

Overview of Upper Pennsylvanian Cyclic Sedimentation in Kansas and Nebraska, Philip H. Heckel, Department of Geology, University of Iowa, Iowa City, Iowa

With contributions from:

Christopher G. Maples and W. Lynn Watney, Kansas Geological Survey, Lawrence, Kansas

John Harris, Shell Western Exploration and Production, Inc., Houston, Texas

David Ball, Champlin Petroleum Company, Houston, Texas

Philip H. Heckel, University of Iowa, Iowa City, Iowa

R. R. West, V. Voegeli, S. Roth, K. Leonard, H. R. Feldman, and C. Cunningham, Kansas State University, Manhattan, Kansas

Royal H. Mapes, Ohio University, Athens, Ohio

Hans-Peter Schultze, University of Kansas, Lawrence, Kansas

R. Matt Joeckel, …

Lake Maloney Quadrangle, Nebraska--Lincoln County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5 minute series (topographic)

100° 45' to 100° 52' 30"

41° 00' to 41° 07' 30"

Includes Ogallala Outcrops (pencil)

Review Of The Wisalts Bank Installations, C J. Henschke

Resource management technical reports

No abstract provided.

Minimal Soil Disturbance Sowing In New South Wales And Its Relevance To Reducing Water Erosion In Western Australia, K J. Bligh

Resource management technical reports

During a study tour in New South Wales both inexpensive modifications to existing seeders and state of the art new mechanisms were investigated. Narrow-winged points can readily be fitted to existing tined seeders to immediately reduce water erosion in Western Australia. Press wheels may improve crop establishment, particularly with early sowing in this predominantly winter-rainfall region.

Small Farmland Experimental Catchments In Western Australia, K J. Bligh

Resource management technical reports

No abstract provided.

Water Erosion On Vegetable Growing Land In South Western Australia, D J. Mcfarlane, N D. Delroy, H V. Gratte, J P. Middlemas, A M E Van Vreeswyk, I Mckissock

Resource management technical reports

The most serious erosion was found to be occurring in the Donnybrook area due to a combination of erosive winter rainfall, steep slopes and erodible soils. The most serious erosion was found to occur when storm runoff entered the vegetable plots from above, providing a transporting medium for the cultivated soil. A predictive model of erosion showed that soil texture, furrow slope, plot length, rainfall erosivity and canopy cover were significant factors affecting soil loss.

Maine Nonpoint Source Pollution Assessment Report, Bureau Of Water Quality Control

Maine Collection

Maine Nonpoint Source Pollution Assessment Report

Prepared by the Maine Department of Environmental Protection, Bureau of Water Quality Control, Augusta, Maine 1989.

Contents: Executive Summary / Introduction / Methodology / Statewide Water Quality Summary / State And Local Agency Programs for Control of Nonpoint Source Pollution / Process for Identification of Best Management Practices and Associated Standards / List of References / List of Figures / List of Tables

The Relationship Between The Concentration Of Total Soluble Salts And Osmotic Potential In Soil, Ground And Surface Waters For Several Regions Of Western Australia, H Borg

Resource management technical reports

In Western Australia salinity data are commonly reported in milligrams of total soluble salts per litre of solution. Laws from solution chemistry and data on the soluble salt composition for various regions of the State were combined to derive a relationship between total soluble salt concentration (C) and osmotic potential (WO) for each region. For the south-west of Western Australia, which contains the most productive agricultural areas in the Sate, this relationship is WO = 0.075 C.

Johnson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Landscape Assessment Of Soil Erosion And Nonpoint Source Pollution, Ian D. Moore, John L. Nieber

Journal of the Minnesota Academy of Science

ABSTRACT-The hydrologic processes occurring in the landscape are a manifestation of its topographic attributes. Spatially variable topographic-based attributes permit the distribution of hydrologic and nonpoint source pollution processes to be mapped within catchments. They can be derived from Digital Elevation Models (DEMs) using a variety of Terrain Analysis Methods (TAMs). The relationships between topographic indices and the spatial distribution of the potential for surface runoff, groundwater recharge, soil erosion, and evapotranspiration are graphically illustrated.

Lake Mixing Dynamics And Water Quality Models, Heinz G. Stefan

Journal of the Minnesota Academy of Science

ABSTRACT-To forecast water quality changes or to evaluate the potential success of restoration measures in lakes, it is necessary to formulate "models" which relate lake water quality to the inflows and outflows of materials and energy. Concepts of dynamic deterministic (cause-effect) models and examples are presented. The relationship between internal thermo-hydraulic processes and water quality is stressed. Stratification mixing, and nutrient kinetics are included in these models.

Residence Times Of Minnesota Groundwaters, Scott C. Alexander, E. Calvin Alexander Jr.

Journal of the Minnesota Academy of Science

ABSTRACT-Tritium, 14C, and nitrate analyses for eighty groundwater samples from selected Minnesota aquifers indicate a range of residence times from a few days or weeks to tens of thousands of years. The presence of significant nitrate contamination in groundwater is confined to recent or mixed groundwaters. Isotopic studies can yield information that will be useful in the design of effective groundwater protection plans in Minnesota.

Interbasin Water Transfers: An Economic Panacea Or A Political Ploy?, K. William Easter, Nir Becker

Journal of the Minnesota Academy of Science

ABSTRACT-New concern about the open access nature of the Great Lakes was sparked by the 1982 Sporhase Supreme Court Decision which limited states' power to prevent interbasin water transfers and was intensified by the 1988 drought in the Midwest. In response to the court decision, the Great Lakes Charter was adopted which established a set of management rules for new interbasin water transfers and other consumptive water uses. However, not all Great Lakes states have implemented the Charter provisions and, even if they did, it is not clear that the Charter objectives could be reached. The big losers from a …

Hydropower Research And Development In Minnesota, Roger E. A. Arndt, John S. Gulliver

Journal of the Minnesota Academy of Science

ABSTRACT-Although hydropower development in Minnesota accounts for a relatively small percentage of its total electricity production (2-3% ), it has a very favorable impact on Minnesota's economy. Every dollar saved on fuel purchases outside of Minnesota is the equivalent, considering the average economic turnover of money in Minnesota, to spending three dollars within the State. In addition, an estimated 320 million dollars of possible new construction of economical hydropower installations would also represent a significant boost to the local economy since hydropower is a technology that can be developed with Minnesota-based engineering firms and construction contractors. This paper summarizes the …

The Comprehensive County Water Planning Process In South Central Minnesota, Henry W. Quade, Robert A. Barrett

Journal of the Minnesota Academy of Science

ABS~CT-Development of co_unt)_' comprehensi~e water plans is underway in a majority of Minnesota counties as a result of recent leg1slat1on. The planning process requires the fashioning of new relationships and r~les for local and st~te _government, agen':Y personnel, and interdisciplinary technical teams. Early water planning efforts reve~I. s1gmfi~ant problerI:s with the adequacy and applicability of existing water resources da~. Assessment of e1t1Zen attitudes regarding water resource issues was found necessary to link support with policy and develop public education activities. Analysis of water resources data combined with citizen and stat~ agency attitudes has enabled counties in south central Minnesota to …

Planning For Horticultural Expansion On The Swan Coastal Plain, P Coghlan, Geoff Moore, Jim Dixon

Journal of the Department of Agriculture, Western Australia, Series 4

Horticulture is an intensive, high value form of agriculture highly dependant on the availability of good water supplies for the year-round production of fresh produce. Production increase in Western Australia and the encouragement and development of export markets has caused rapid expansion if the industry in recent years.

Expansion is expected to continue, placing severe pressure on available water supplies and suitable land close to markets. At present' 90 per cent of the Stase's horticultural land is on the Swan Coastal Plain and minor selected hills areas around Perth.

Oil In Nebraska, M. P. Carlson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Mineral Operations Review, 1988, Raymond R. Burchett, Duane A. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Mineral Yearbook Of Nebraska-1989, Karl Starch, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Pawnee County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Significant Rises And Declines In Nebraska Groundwater Levels (From Pre-Development As Of Fall 1987)/Registered Irrigation Wells In Nebraska (As Of January 1, 1988), Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Resource Notes-Academic Year 1988-89

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Natural Resources District Boundaries, Nebraska Natural Resources Commission

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Natural Resources District Boundaries, Nebraska Department Of Natural Resources

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Gage County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Otoe County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.